Nozzle



June '16, 1931.- s, w 1,809,999

NOZZLE Filed. Feb. 4, 1929 Patented June 16, 1931 UNITED STATES PATENT OFFICE STUART A. WIER, OF DALLAS, TEXAS, ASSIGNOR TO TRIDEX CORPORATION, OF DALLAS,

' TEXAS, A CORPORATION OF DELAWARE NOZZLE Application filed February 4, 1929. Serial No. 337,300.

This invention relates to new and useful im rovements in nozzles.

no object of the invention is to provide a nozzle for producing an atomized spray, whereb a fluid under pressure may be discharged against a highly finished surface when the nozzle is held close thereto, without injuring said surface. Y

A further object of the invention is to provide a difl'usedatomized spray wherein the needle or small solid stream usually present in the center of such sprays is eliminated, thus producing a soft, equalized spray.

A further object of'the invention is to provide a nozzle for producing a spray which is finely atomized and widely scattered.

Further reference will be made herein to the foregoing and other features of the invention, which will be more particularly pointed out.

In the following specification an exemplification of the invention is set forth and this is illustrated in the accompanying drawings, in which:

Fig. l is a side elevation of a nozzle constructed in accordance with the invention,

Fig. 2 is a longitudinal. sectional view of the same,

Fig. 3 is an underside view of the head of the nozzle, and

Fig. 4 is a perspective view of the same.

In the drawings the numeral 10 designates the shank of a nozzle body. One end of the shank is merged into an enlarged socket or thimble 11. This socket has internal screw ple of the hosethreads 12 for receiving the nip connection (not shown) to w ich the nozzle is attached. 1

The forward end of the nozzle is preferably curved from the longitudinal axis of the shank and the bore 13 is tapered toward the discharge end or head 14 of the nozzle. This nozzle is particularly designed for washing surfaces and parts, such as for instance automobiles, the interiors of barrels, tanks, etc.

It is very advantageous and substantially necessary to curve t e body of the nozzle in order to do the work for which it is desi ed; By curvin thedischar e or forwar end portion of't e body of t e nozzle diflicult.

.places can be more readily reached, as for surface being washed will tend to force the nozzle away from the work, thus automatically influencing the operator not to hold the nozzle too close so as to damage the surface. where a hot detergent solution is used. If the nozzle body were straight the back pressure would be in line with the flow of the fluid and would not be as noticeable.

7 Further, where the body of the nozzle is made straight and even though the head or discharge end is flattened so asto diffuse the spray, there is present in the center of the spray a small solid streamof liquid which is called the needle. Where a highly finished surface is being washed this needle will cause jections appear. I

As is shown in Fig. 2, the bore 13 is reduced as it approaches the head and this causes the fluid to change its course when flowing.

through the curved portion. Where the discharge end of the head was made with the 1i s in alinement, as is the common practice with nozzles, it was found that a greater portion of the spray was directed downwardly when the nozzle was held in an upright position. In order to correct this, the upper lip of the head was provided with a concaved notch 15, but this resulted in more of the spray being directed upwardly than down wardly A deeper and more pronounced curved notch or recess 16 was cut in the lower lip of the nozzle head and when this was done the spray was not onl equalized, that is equal portionsabove and elow the head, but all.

tendency toward a needle was eliminated.

Another result was that a widely difl'used spray: covering a considerable area when held 12 inches from the work was produced. Owing to the notches 15 and 16 the spra assumes a somewhat cruci-form and is ma e u of numerous fine streams, none of whic approach a needle. This nozzle has been 2 mosses found very successfill for cleaning surfaces. Nozzles of this type are subjected to hard use and in order to compensate for the wear inoi ental to dragging the head 14 over a con- 5 crete or other floor, the walls of said head are thickened, thus prolonging the life of the nozzle. I

Various changes in the size and shape 0 the different parts, as well as modifications and alterations, may be made within the scope of the ap ended claims.

What fclaim, is: 1. A nozzle having one end portion curved and provided with a curved bore and a head, said'head having a reduced transverse discharge opening, the upper lip of the opening having a concaved notch and the lower lip of the opening having a concaved notch, the upper notch overhanging the lower notch and c the lower concaved notch being deeper than the upper concaved notch, whereby the bore of the head overhangs the lower notch.

2. A nozzle having a curved end portion and a longitudinal curved bore, said bore being reduced and flared at the outer end of the nozzle, the outer end of the' nozzle having concaved notches extending inwardly in its upper and lower lips located centrally of the flared end of the bore. In testimony whereof I aflix my si nature.

STUART A. IER. 

